A strange solution to the problem

Правка en1, от canonica1, 2022-06-03 21:02:31

I was looking at solutions to the problem and came across this. Does anyone know how it is?)

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  Rev. Язык Кто Когда Δ Комментарий
ru1 Русский canonica1 2022-06-03 21:03:52 147 Первая редакция перевода на Русский
en1 Английский canonica1 2022-06-03 21:02:31 151 Initial revision (published)